The most important advice I can give is to make your survey as finely tuned as possible. It may take several drafts and test runs but it’s worth the effort in order to have a survey that asks the right questions and is clear to those taking it. This will make analyzing the data much easier for you later on and will avoid unusable responses. When you write your survey know exactly what you are looking for so you don’t forget to collect a vital piece of information. It’s also a good idea to start early and send out your survey with plenty of time for people to respond and even more time for you to organize and analyze it.